Charles osborne



(N0 ModeL) 0. OSBORNE.

HINGE. No. 481,732. Patented Aug. 30, 1892.

CHARLES OSBORNE, OF NEWV YORK, N. Y., ASSIGNOR TO THE 'WI-IITINGMANUFACTURING COMPANY, OF SAME PLACE.

HINGE.

SPECIFICATION forming part of Letters Patent No. 481,732, dated August30, 1892.

Application filed April 8, 1890. Serial No. 347.107. (No model.)

T0 to whom it may concern:

Be it known that I, CHARLES OSBORNE, of the city and county of'New York,in the State of New York, have invented a certain new and usefulImprovement in Hinges, of which the following is a specification.

I have discovered that by giving a certain form to the parts they may beproduced by drop-press, thereby greatly cheapening the cost andperfecting the manufacture of flexible joints or hinges.

I have in my experiments applied the invention for small hinges forboxes, and will describe the invention as so applied, although it isobvious that hinges may be of larger size and adapted for other uses.

The following is adescription of the invention.

The accompanying drawings form a part of this specification.

Figure 1 is a central section through a box having my hinge. Theremaining figures are on a larger scale and show the hinge detached.Fig. 2 is a face view of the two portions separated. Fig. 3 is an endview showing the hinge closed. Fig. 4is a corresponding view from theback. Fig. 5 is an end View showing the hinge opened. Fig. 6 is acorresponding view from the back. Fig. 7 is a longitudinal sectionthrough the hinge on the line of the axis.

Similar letters of reference indicate corresponding parts in all thefigures where they appear.

A is the plate orbody of the two bosses, the hinge being of the classknown as threeknuckle -that is to say, one part having two bosses aproper distance apart and the other having one boss adapted to fitbetween, the pivot-pin being extended centrally through the three bossesand secured. The bosses are marked A and A The. opposite plate is markedB and its single boss is marked B. The pivot or axial pin is marked C.Instead of making these bosses cylindrieal,as usual, I make themswelled, each being much larger at its mid-length than near each end,and the extreme ends of each boss instead of being plane at right anglesto the axis are domed or rather semi-domed, the portion which is at aplane at right angles to the axis being only son that it not onlyinsures the production of a cheap and smooth-working hinge, but alsoavoids the common objection that squarelyformed corners and meetingsurfaces are hard to produce by stamping or drop-forging. I make in eachpart corresponding concaves matching closely to the swells in the otherpart. The plate or body is extended sufficiently past the axis to form areliable stop. I have marked the portion thus extending from the body Awith a star A* andthe part which extends from the bod y B with a starB*. These extensions A and 13* are upon curved lines following thecontour of the bosses, as seen in Fig. 6, so that when the hinge isthrown open the extensions not only abut and resist further opening, butalso interengage, as seen in said Fig. 6, and are thus fitted tobetterwithstand strains parallel with the pivot C, and thus preventinjury to the hinge when open by pressure thereon or by its hittingagainst or by being hit by anything. Were the stops formed upon straightlines side strains on the cover of the box would tend to bend the pivotand prevent perfect shutting of the lid. I consider this curvedinterengaging of the extensions as important. The spheroidal cavity inA, which receives the swelled boss B, is marked a. The correspondingcavities in B, which receive the bosses A and A respectively, aremarked 1) and 12 The important advantage due to my inven-' tion is thatwhen the parts are made from metal which is reasonably ductile ormalleable the parts can each be produced at one blow in a die-press. Ihave in my experiments, using silver as the material, produced in diespieces of sufficient length to each make parts of a number of hinges,each being at a later stage sawed oil into lengths and drilled andapplied together. Besides this advantage,the use of the spheroidalbosses or bosses curved lengthwise of the pivot-pin as well as at rightangles thereto has the advantages over cylindrical bosses of diminishingthe weight of the hinge and decreasing th resistance of opening andshutting the same, and it also renders the hinge more resistant to sidestrains, since each boss is held between the end walls of its cavity,which therefore oppose motion of the box-lid lengthwise of thepivot-pin. Ican make the arm to operate with a spring at the same timeand,

as a part of the same piece, making as many arms as are necessary, sothat when sawed off into lengths and parts are properly reversed andapplied together there will be only one arm on each hinge. I have shownsuch arm on the part B and have marked it D.

I claim as my invention- 1. The improved hinge herein described,composed of a plate A, having upon its face the spheroidal bosses A andA and similarly-shaped cavity a lying between said bosses, and the plate13, provided with boss B and cavities l) and 19 upon each side thereofand adapted to closely engage, respectively, with the cavity and bosseson the plate A, and the pivot-pin 0, passed through all of the bosses,

said plates being formed with interengaging extensions A* and 13*,respectively, formed upon curved lines conforming to the outlines of thebosses and adapted to serve as stops, and the plate B, formed upon theopposite side of the pivot-pin C from said curvilinear larly therefrom,substantially as specified.

2. A hinge provided at the back with abutting stops adapted tointerlockwhen the hinge is open, so as both to arrest the opening of the hingeand when said hinge is open to restrain the movement of its parts uponeach other lengthwise of the pivot-pin, substantially as described.

3. A hinge composed of apivot-pin, in connection with plates having ontheir opposing .faces spheroidal bosses and cavities curved in thedirection of the axis of the hinge as well as transversely thereto, thesaid opposin g faces being of greater width than the diameter of saidbosses and cavities, and the said cavities inclosing the greater part ofthe convex surfaces of said bosses both in a direction transverse to thesaid axis and longitudinally thereof, substantially as described.

4. A hinge provided at the back with abutting stops and at the frontwith an angular arm, said stops being adapted to interlock when thehinge is open, so as at such times to restrain the movement of its partsupon each other lengthwise of the pivot-pin, and said arm being adaptedto receive the pressure of a spring, substantially as described.

In testimony whereof I have hereunto set my hand, at New York city, this14th day of 1 March, 1890, in the presence of two subscribjingwitnesses.

extensions, with an arm D extending angn- 5 CHARLES OSBORNE.

Vitnesses:

HENRY H. 0001:, H. B. BRITTEN.

